<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script>
			console.log(str1.constructor);
			var ol={
				"name":"lily",
				"age":14,
				satHi:function(){console.log()}
			}
		</script>
	</body>
</html>
